ストローグ List of Products and Services

◎Low-cost seismic control function It is possible to add a seismic control function to wooden buildings at a low cost. For a typical two-story house, placing about 4 to 6 units on the first floor will demonstrate effectiveness. The connectors have the performance to withstand seismic energy equivalent to that of the Great Hanshin Earthquake through plastic deformation, making them suitable for new constructions as well as renovations. ◎High planning flexibility due to wall strength certification We have obtained certification from the Minister of Land, Infrastructure, Transport and Tourism for two types: - Traditional wall floor specification: wall strength ratio of 4.2 times (FRM-0587) - Large wall specification: wall strength ratio of 3.9 times (FRM-0588) When increasing the seismic resistance grade, it is necessary to add more shear walls, but the Face Damper can be included in structural calculations as a shear wall, eliminating the need to increase shear walls excessively. This allows for greater planning flexibility compared to seismic control systems that cannot be treated as shear walls. ◎Performance verified through experiments It has been demonstrated through full-scale vibration experiments that adding a Face Damper can reduce shaking by approximately 74%. *For more details, please feel free to contact us.

• Joints between components

◎Free wooden structure frame Can be used in combination with other straw connectors to create structural frames tailored to plans, including multi-layered frames, continuous frames, single-sided frames, atrium frames, column joints, beam joints, and column-wall frames. ◎High strength and ductility It has been demonstrated that a single column can exhibit a strength equivalent to a wall ratio of 24 times per meter, and that even if the column tilts by 1/10 of its height, it maintains strength without wood failure, making it a highly ductile joint. ◎Suitable for small to large wooden structures It can accommodate small to large cross-sections and can be used in wooden buildings ranging from residential to school scales. ◎Extensive track record Used in various buildings for purposes such as garages, daycare centers, stores, and offices. It can achieve large spaces with spans over 10 meters, large openings with a sense of openness, and skeleton-infill housing. ◎High constructability Wood processing is carried out in a pre-cut factory, and connectors are attached. On the construction site, it only requires simple tasks like tightening bolts or driving drift pins, allowing for the precise construction of wooden structure frames without the need for skilled techniques. *For more details, please feel free to contact us.

• Joints between components

◎Wide Range of Applications and Building Scales We offer various connectors with different load capacities that can accommodate a wide range of applications and building scales, from residential to educational facilities. They can be used for square cross-section columns as well as rectangular cross-section columns, and are also compatible with 90-degree columns, making them suitable for small structures such as infills. ◎High Load Capacity Connectors Some connectors have a load capacity of approximately 500 kN (about 50 tons). Additionally, connectors with toughness (ductility) types can be used according to structural characteristics. ◎Beautiful Joints The connectors fit inside the columns, achieving beautiful joints. It is also possible to create joints where processing holes, such as pin holes, are completely invisible, ensuring that the beauty of the wood grain is not compromised even in exposed structures. *For more details, please feel free to contact us.*

• Joints between components

◎Strong and Rigid Joints Using dedicated shear keys, it exhibits a large load-bearing capacity suitable for medium to large wooden structures. Unlike conventional connectors, it prevents initial play by having the same diameter for both the tenon and mortise. ◎Short Delivery Times with Prefabricated Products This is a standardized product for medium to large wooden structures, offering advantages in terms of delivery time and cost compared to custom connectors like steel plate inserts. Additionally, it is easy to adopt as standard drawings are available. It has also obtained joint evaluations from the Japan Architectural Center. ◎Numerous Achievements There are various achievements in medium to large wooden buildings such as school facilities, government buildings, and nursery schools. *For more details, please feel free to contact us.*

• Joints between components

◎Strong and Durable Joints The cross-sectional defects are minimal, and compared to conventional mortise joints, the load-bearing capacity is higher, with a maximum strength approximately 1.5 times greater. Unlike typical connectors, it prevents initial play by having the same diameter for both the tenon and mortise. ◎Beautiful Joints Designed in optimized sizes for small-scale use, it can also be used for small components in medium to large-scale applications. The connectors are hidden within the wood, and the slits are small, allowing for beautiful joints even in exposed structures. ◎Flexible Wooden Structural Frames It can be used in conjunction with other straw connectors to create wooden structural frames. Various wooden structural frames can be formed according to the building's purpose, scale, and planning. It accommodates 90mm square timber and is also ideal for small-scale structures like infills. ◎Safe and Accurate Construction High-precision wood processing tailored to the connectors is performed in advance at a precut factory, making the attachment and construction of the connectors easy. This allows for the rapid completion of highly accurate structural frames without the need for skilled craftsmanship. *For more details, please feel free to contact us.*

• Joints between components